these are energy producers in the u.s. going higher. >> steph? >> dbd. >> pete? >> hewlett-packard. >> worst day in the markets in a month. "power lunch" picks it up right now. >>> exactly right, scott. tensions are rising in ukraine. lots of headlines breaking in just the past hour. it is obviously a very fluid and increasingly tense situation. we will take you live to kiev. secretary of state john kerry is heading to ukraine. he will be there tomorrow. but the big question is, what can the u.s. do, if anything? investors aren't waiting for the answer. they are selling big-time. stocks plunging around the world as worst day in a month for the dow. the dow with huge triple digit declines of nearly 200 points, better than 1% decline. now, warren buffett says that if others are selling, he's buying stocks today. what is the oracle eyeing right now? he spoke with becky quick. we'll find out this hour. stocks, of course, tanking today but over the past 20 years, equities have had some of their biggest gains right now in march and april. so if you can play past the wo